7n+8-3n+4=3n+15-7

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Solution for 7n+8-3n+4=3n+15-7 equation:


Simplifying
7n + 8 + -3n + 4 = 3n + 15 + -7

Reorder the terms:
8 + 4 + 7n + -3n = 3n + 15 + -7

Combine like terms: 8 + 4 = 12
12 + 7n + -3n = 3n + 15 + -7

Combine like terms: 7n + -3n = 4n
12 + 4n = 3n + 15 + -7

Reorder the terms:
12 + 4n = 15 + -7 + 3n

Combine like terms: 15 + -7 = 8
12 + 4n = 8 + 3n

Solving
12 + 4n = 8 + 3n

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '-3n' to each side of the equation.
12 + 4n + -3n = 8 + 3n + -3n

Combine like terms: 4n + -3n = 1n
12 + 1n = 8 + 3n + -3n

Combine like terms: 3n + -3n = 0
12 + 1n = 8 + 0
12 + 1n = 8

Add '-12' to each side of the equation.
12 + -12 + 1n = 8 + -12

Combine like terms: 12 + -12 = 0
0 + 1n = 8 + -12
1n = 8 + -12

Combine like terms: 8 + -12 = -4
1n = -4

Divide each side by '1'.
n = -4

Simplifying
n = -4

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